0
\$\begingroup\$

I need to replace the capacitors on a blower motor, they heated and leaked. I couldn't find much capacitors that are compatible with the casing and has the same rating as the old ones. I however managed to find this one on Digikey.

https://www.digikey.ca/short/z2jwbb

The original ones are two 'All Earth 50uf 250vac 60/50' connected in parallel acting as one capacitor. The one I found on Digikey has 4 terminals, 2 on each side, while the old one only has 2, 1 on each side.

I tried reading the datasheet but couldn't find much information about the terminals connection. Why is there 4 terminals on the one I found and will it work if I replace the old ones with this one.

I have attached two images of the old ones.

https://i.sstatic.net/mQ4GB.jpg https://i.sstatic.net/wALFV.jpg

\$\endgroup\$

2 Answers 2

4
\$\begingroup\$

Most likely the Nichicon EEC you found on Digikey is configured as a 'DC-link' - the terminals closest to each other are internally paralled. This simplifies wiring (saves you a junction) if you are using it as a filter (between a source and a load).

Note that the EEC capacitor does not appear to be a UL-recognized component; the original All-Earth is (the backwards UR logo on the bottom-left of the silkscreened area). I recommend you ensure your replacement parts are UL-recognized for safety reasons.

\$\endgroup\$
1
  • \$\begingroup\$ I was gonna ask if I could replace it with a higher VAC. Thank you very much. I found one that is UL-recognized with a higher VAC. It's not the same shape but I have room to make it fit. \$\endgroup\$
    – DustyMan
    Commented Sep 15, 2020 at 17:30
2
\$\begingroup\$

Digikey is not necessarily the best source for cULus marked motor run capacitors. Appliance parts shops such as AMRE Supply and HVAC parts distributors tend to have a good selection in stock.

Mouser has some as well, and will ship to Canada.

You can consider a higher voltage rating such as 370VAC if you have room, it might last longer.

\$\endgroup\$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.